Disc mounting



Get. 7, 1947.

. J. MADER DISC MOUNTINGv Original Filed Feb. 12, 1945 2 Sheets-Sheet 1 N 6 4 l A. 8 7 v h I kw a 6 1 2 J Joapeph Nader, M 12 J. MADER DISC MOUNTING 2 Shets-Sheet 2 Original Filed Feb. 12, 1945 Reissued Oct. 7, 1947 DISC MOUNTING Joseph Mader, Chicago, Ill., assignor to Marcmont Automotive Products, Inc., Chicago, 111., a corporation of Illinois Original No. 2,406,553, dated August 27, 1946,

Serial No..577,420, February 12, 1945. Application for reissue December 23, 1946, Serial No.

4 Claims.

1 Thepresent invention relates to. improved means for non-rotatably connecting a member such as a disc, wheel or the like to shafts of diflerent sizes.

Figure '7 is an end view of the left end washer shown in Figure 1 showing the opening in the washer in full lines and the normal position of one of the retaining nuts indicated in broken lines.

Figure 8 is a vertical sectional View of the washer shown in Figure '7.

Figure 9 is an end view of the right end washer shown in Figure 1.

An important feature of the invention consists Figure 10 is a Vertical Sectional View Of the in Providing a revoluble member such as a disc Washer Shownin Figure 9. or the like with a central opening shaped to u e 11 i a from; V Of a modified form receive shafts of different sizes so that the revolof disc. uble member may be selectively and non- Figure 12 is a vertical edge view of Figure 11. rotatably connected to either of two shafts. 10 Figure 13 is a front view of a further modified A further feature of the invention consists form of discinh pliioviding a mounting for disc harrows in 3Figure 14 is a vertical sectional view of Figure w ic each disc is formed with a centrall dis- 1 posed square opening for non-rotatably recgiving Figure 15 is an enlarged detailed sectional a square shaped axle of th same size, and in 5 view showing a disc connected to a small size which the sides of the squared opening are proshaft, and vided intermediate their ends with outwardly Figure 16 s a View Similar to Figure 15 Showextendin aligned grooves hi h form a Substam ing the disc connected to a larger size shaft. tially square socket of a different size than the Heretofore in the mountings for disc harrows, square opening and are arranged to receive a 20 the Square Ppenings in the discs for recefivmg square 1 shaft. of the Same Size as the socket, the supporting shaft or axle were of uniform so that one or more discs may be conveniently S128 and could P be used wlth sqPare Shaft fixed to axle shafts of different sizes at a minof the same In Order to provide means imum expenditure of time and effort 2 whereby these discs may be detachably secured Another object is to provide the center portion 9 Square shafts of dlfiergm 2 each of the of a disc adjacent the shaft receiving opening dlscs the harmw (Flg' 1) 1S Q with with a reversed curve or annular groove for the substantlauy square opemng F 15) 2 purpose of imparting greater flexibility and pregash of the slqes of the opertmg Intermediate haped venting damage to the (1150 when in operatwn. Its ends has ahgned mtwitrmY disposed v S other objects and advantages of the inven grooves or recesses l3 which form a square socket tion will become apparent from the following de- M of Smaller Size than the q re opening H. scription when taken in conjunction with the For the purpose of illustration, three transversely accbmpa'nying claims and drawings curved discs II) are shown mounted on a square Referring to the drawin s in which I haw shaft [5 which is substantially the same size as shown several preferred emiodiments of th in the smaller square socket M So that the comers ventiom e of the shaft interlock with the ahgned grooves 1 1 13 to positively and non-rotatably connect the. 5 a me e anon of a harrPW discs to the shaft. The (11505 ID are uniformly constructed in accordance with the present in- Spaced on the shaft '5 by the sleeves or spools i 40 I6 each of which is formed with a central square 5 3 55 25 zffiiz gfil i through opening I! similar in construction 1nnddslize to the opening II in the disc, and ou war y exal g '5 g i" taken substantla'ny tending aligned grooves l8 which register with 0 g 9 He 0 gum and are of the same size as the grooves l3. One 4 is detailefl Sectional Y taken end of the sleeve l6 such as I8 is convex so as Substantlany along the 11119 0f Flgure to bear against the concave portion of the adl ure 5 is an end view of one of the Spac jacent disc while the opposite end I9 is concave s eeves. to contact with the complementary curved por- Figure 6 is a longitudinal sectional view of a tion of its adjacent disc. The ends of the shaft Spacer Sleeve. i5 are threaded as at 20 to receive the retaining nuts 2|. A washer 22 having a curved inner face 23 and a central opening 24 similar in shape to the opening H and the socket I4, is arranged to be clamped against the outer left-hand disc It! by one of the nuts 2|. Preferably the outer 3 I end of the opening 24 terminates in a recess 25 for receiving the nut 2|. A washer 26 has a similar shaped central opening 21 and is held against the concave portion of the adjacent disc ID by the other nut so that when the parts are set up, the discs are maintained firmly in locked position on the shaft I5. In the event it is desired to use the discs 16 with a different size harrow shaft, this can conveniently be done upon dismantling the discs from the shaft I4 and connecting them to the larger size square shaft 28 (Fig. 16). It will be noted that the shaft 28 is substantially the same size as the square openings H in the discs and the openings I! in the sleeves [6, so as to snugly fit into and engage these openings in order to lock the shaft to the discs and the sleeves. While the improved form of opening has been shown associated with a harrow disc, it Will be manifest that the same may with equal efliciency be used for connecting one or more rotatable members to shafts, axles or the like, of different sizes and at a minimum expenditure of time andeffort.

In the modification shown in Figure 11, the curved disc 29 is provided with a square opening 30, the sides of which intermediatetheirends are formed with oppositely aligned grooves 3| so that the disc may receive shafts of different sizes. The disc adjacent the central opening 38 has a reversed curved or annular V-shaped groove 32 on one side and an outwardly spaced V-shaped annular groove 32a on its opposite side. These grooves are concentric with the disc and the groove 32a diminishes progressively towards the outer periphery thereof. This arrangement of the grooves imparts gerater flexibility and also guards against fracture or damage of the disc during operation.

In the modification shown in Figure 13, the disc 34 has a central opening 35 shaped to receive shafts of different sizes and may be reinforced by radial corrugations 3-6 which preferably extend from a point adjacent the central opening to the outer periphery of the disc.

It will be seen that by reason of the particular configuration of the central opening in the disc, that, simple, efficient and positive means are provided for connecting either a single disc or a plurality of discs to shafts or the like of different sizes. Thus, the invention is admirably suited for use with disc narrows since not infrequently the manufacturers of such devices provide a square shaft for a 16" disc while others use a 1" square shaft for the same size of disc. By arranging the central opening in the disc so as to accommodate a shaft of either size, the same disc can be conveniently connected to a large or small size shaft and thus eliminate the necessity of providing separate discs for each size of shaft.

It will be understood that the forms of the invention shown and described are'merely illustrative of preferred embodiments and that such changes may be made as fall within the purview of one skilled in the art Without departing from the spirit of the invention and scope of the claims.

I claim:

1. A harrow having a shaft, a. plurality of spaced harrow discs carried thereby, spacer members on said shaft for spacing said discs, said discs and spacer members having openings receiving the shaft, said spacer members having means engaging said discs on opposite sides thereof, the walls of the disc openings engaging the shaft to fix the discs thereto for rotary movement, and the walls of said disc openings also having a configuration for mounting on a different sized shaft of greater or less cross section to hold said discs fixed thereon.

2. A harrow having a shaft, a plurality of spaced harrow discscarried thereby, spacer members on said shaft for spacing said discs, said discs and spacer members having openings receiving the shaft, the walls of said Openings engaging the shaft to fix the discs andspacers thereto for rotary movement together, and the walls of said openings also having a configurationfor mounting on a different sized shaft of greater or less cross section to hold the said discs and spacer fixed thereon.

.3. A harrow having a shaft which is polygonal in cross section, aplurality of spaced harrow discs carried thereby, spacer members on said shaft for spacing said discs, said discs and spacer members having polygonal openings receiving the shaft, the walls of said openings engaging the shaft to fix the discs and spacers thereto for rotary movement together, and the walls of said openings also having a configuration for mounting on a different sized shaft of greater or less cross section to hold the said discs .and spacers .flxed thereon.

4. For use in a harrow having va. shaft which is polygonal in cross section and adapted to receive harrow discs thereon for rotation with the shaft, a concavo-convex earth-engaging harrow disc having formed out of its central portion a concentric opening extending entirely through the disc, the walls of the opening defining a plurality of concentric polygonal shaft-receiving'openings of different size for interchangeably receiving harrow shafts of different polygonal cross sections corresponding to the slzeof said openings.

' JOSEPH MADER.

REFERENCES CITED The following references are of record in the file of this patent UNITED STATES PATENTS Number Name Date 323,343 La DOW July 28, 1885 437,124 DOW Sept. 23, 1890 451,421 La Dow Apr. 28, 1891 629,243 Jaeger Dec. 19, 1899 792,761 Duncon "June 20, 1905 1,512,702 McCarty Oct. 21, 1924 1,936,109 Frank Nov. 21, 1933 2,168,072 Rumely Aug. 1, 1939 

